Janaporn, Pornchand, Nion Tayrattanachai, and Duangruthai Pokaratsiri. “A VOCAL SKILL LESSON PLAN FOR THE YOUNG STUDENT WITH THE PRONUNCIATION AND BREATHING PROBLEMS”. Srinakharinwirot Research and Development Journal of Humanities and Social Sciences 16, no. 32, July-December (October 31, 2024): 1–9, Article 275894. accessed August 27, 2026. https://so04.tci-thaijo.org/index.php/swurd/article/view/275894.